Server administration (also known as server management) is a set of activities whose main goal is to ensure a secure and efficient server environment. This is nothing more than taking care of your website, server or infrastructure. The administrator takes appropriate action to eliminate failures or minor problems.
The most important tasks are 24/7 monitoring of your site, installation and configuration of services (All kinds of certificates, software, etc.), periodic analysis of the server and its configuration, log analysis and creation of security copies (backup).